修改电价辅助类的命名空间

duheng

2025-03-20 1ec65a7b983a7d519c3602d20a855ac1bac1825e

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<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <PropertyGroup />
</Project>